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Finding the Fourth Proportional to 271,959.70, 407,939.55 and 209,751.70

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Solution

The fourth proportional to 271,959.70, 407,939.55 and 209,751.70 is: 314,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,959.70 : 407,939.55 = 209,751.70 : x
  2. Step 2: Convert to fraction form
    271,959.70/407,939.55 = 209,751.70/x
  3. Step 3: Cross multiply
    271,959.70x = 407,939.55 × 209,751.70
  4. Step 4: Simplify right side
    271,959.70x = 85,566,014,109.74
  5. Step 5: Solve for x
    x = 85,566,014,109.74/271,959.70
  6. Step 6: Final answer
    x = 314,627.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.